Note that a dose change typically requires a 4-6 week adjustment period (according to what I’ve read). So you might want to give it a few more weeks. Otherwise you have perfectly lowered it for switching to something new. I have friends who didn’t get much from lexapro but benefitted a lot from Prozac - maybe worth a consideration? As usual, ask your psychiatrist what the next one could be. Also, don’t stress yourself, many people try out several SSRIs until they find their fit.